Power systems are under increasing stress as deregulation introduces several neweconomic objectives for operation. Since power systems are being operated close to theirlimits, weak connections, unexpected events, hidden failures in protection system, humanerrors, and a host of other factors may cause a system to lose stability and even lead tocatastrophic failure. Therefore, the need for improved system damping in a wider operatingrange is gaining more attention. Among the available damping control methods, each.